Verilink NCC 2130 (880-503285-001) Product Manual - Manual (Page 44)

Diagnostics
5-2 Verilink NCC 2130 User Manual
Diagnostics
Menu
A sample of the Diagnostics Menu is shown below in Figure 5-1 .
In this example the word PULSES appears on both the DTE (left
hand) and network (right hand) sides of the display. When the word
PULSES appears alone, that interface has no alarms.
Figure 5-1 Diagnostics Menu
Since a T1 circuit operates by sending pulses to represent a logical
one, the indication PULSES means that the T1 IDCSU portion of this
NCC 2130 sees pulses on the network (right side) interface.
Therefore, of all the messages which might appear on this menu in
upper case characters, PULSES is the only one which does not
represent an alarm condition. Pulses are the logical opposite of a
Loss Of Signal (LOS) condition.
Figure 5-2 below shows the result of disconnecting the T1 circuit
from an NCC 2130 module. The word PULSES no longer appears on
the right hand side where network status is indicated. Instead, a
number of alarm conditions are reported including ALARM, FRAME
LOSS, CRC ERRORS, and SIGNAL LOSS.
NOTE: Whenever an IDCSU reports Signal Loss, it will report other
alarms as well. The other alarms are caused by the signal
loss condition. Ignore the other alarms and find the cause of
the Signal Loss to restore the T1 to service.
IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8 IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8 IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8 IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8
|-----------------------| |-----------------------| |-----------------------| |-----------------------|
| |
| | | | | |
-------<< dte <<-------|----------|f|----------|-------<< net <<-------
-------<< dte <<-------|----------|f|----------|-------<< net <<------- -------<< dte <<-------|----------|f|----------|-------<< net <<------- -------<< dte <<-------|----------|f|----------|-------<< net <<-------
| |r| | PULSES
| |r| | PULSES | |r| | PULSES | |r| | PULSES
| |a| |
| |a| | | |a| | | |a| |
| |m| |
| |m| | | |m| | | |m| |
PULSES | |e| |
PULSES | |e| | PULSES | |e| | PULSES | |e| |
------->> dte >>-------|----------|r|----------|------->> net >>-------
------->> dte >>-------|----------|r|----------|------->> net >>------- ------->> dte >>-------|----------|r|----------|------->> net >>------- ------->> dte >>-------|----------|r|----------|------->> net >>-------
| |
| | | | | |
|-----------------------|
|-----------------------| |-----------------------| |-----------------------|
W) enable dte loops (YES) D) dte loops S) net signals W) enable dte loops (YES) D) dte loops S) net signals W) enable dte loops (YES) D) dte loops S) net signals W) enable dte loops (YES) D) dte loops S) net signals
Y) enable csu loops (YES) N) net loops E) csu err counter
Y) enable csu loops (YES) N) net loops E) csu err counter Y) enable csu loops (YES) N) net loops E) csu err counter Y) enable csu loops (YES) N) net loops E) csu err counter
T) net test time (15 SEC) Q) end tests Z) reset alarm
T) net test time (15 SEC) Q) end tests Z) reset alarm T) net test time (15 SEC) Q) end tests Z) reset alarm T) net test time (15 SEC) Q) end tests Z) reset alarm
B) dte test and mon bec M) mon leads X) exit menu
B) dte test and mon bec M) mon leads X) exit menu B) dte test and mon bec M) mon leads X) exit menu B) dte test and mon bec M) mon leads X) exit menu
[1,1] NEAR IDCSU 2130 > [1,1] NEAR IDCSU 2130 > [1,1] NEAR IDCSU 2130 > [1,1] NEAR IDCSU 2130 >